Accessing USB Programmer With avrdude

Ric Moore wayward4now at gmail.com
Tue Mar 25 17:46:13 UTC 2008


On Sun, 2008-03-23 at 23:18 -0400, Robert L Cochran wrote:
> John Summerfield wrote:
> > Robert L Cochran wrote:
> >> I'm having trouble trying to access a USB device under Fedora 7. I think
> >> udev might be my problem.
> >>
> >> When I try using avrdude with this line:
> >>
> >> [rlc at bobcp4 atmega644]$ avrdude -c usbtiny -p m644 -P usb -U
> >> flash:w:blink_pb3.hex
> >>
> >> I get this error message:
> >>
> >> avrdude: Error: Could not find USBtiny device (0x1781/0xc9f)
> > Try with a leading zero. .../0x0c9f
> >
> I got frustrated and tried this on Microsoft Windows XP...I have this
> working on XP -- avrdude definitely detects the programmer device and
> then it is able to initialize the target microcontroller through the
> programmer. On Fedora 7, it cannot detect the programmer at all, and I
> think that is either because there is a udev rules problem, or avrdude
> was built without libusb support. Maybe I should get the source rpm and
> check into that.
> 
> I will try to put up a web page with photos of the programmer connected
> to a breadboard with the target mcu (an ATMega644) and a test circuit to
> play with...specifically an LED connected to pin PB3 that I want to blink.

What was the name of the company that RedHat acquired in 2000 that had a
software suite for microdevices?? They were in California, Sunnyvale, I
dimly recall. Rahul, do you know this one?? It was one of RedHat's
profitable entities. Ric

-- 
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